Skip steel spear top - internally threaded images slider SKU: Steel Spear Top - Internally Threaded Sign-up to see price Our 316L stainless steel spear tops feature a 1.2mm internal threading and come in a variety of size options. Product Details: Material: 316L ASTM F-138 Implant Grade Stainless Steel Compatible 14g and 12g Internal Jewelry Size Options: 2mm, 2.5mm, 3mm, 4mm, or 5mm